Multi-Qubit Stabilizer Readout on a Dual-Species Rydberg Array
Abstract
The ability to locally control and measure subsets of ancilla qubits in an efficient and crosstalk-free manner is a key ingredient in quantum error correction (QEC). Dual-species neutral atom arrays offer an ideal implementation of these capabilities, enabling independent state preparation, manipulation, and detection on each species. In this work, we realize such a dual-species Rydberg array of Na and Cs atoms trapped in co-localized 2D optical tweezer arrays, using Na as an ancilla to measure stabilizers of surrounding Cs data qubits. We identify the finite interspecies Rydberg-Rydberg interaction strength as a practical obstacle to high-fidelity multi-body entanglement and show that, by tuning the Rabi frequency and the detuning of the Rydberg driving field, the resulting geometric phase error can be compensated. This yields a protocol for simultaneous, non-destructive, in situ stabilizer readout of multiple data qubits via global pulses alone. Using this protocol, we demonstrate non-destructive measurement of Pauli-Z stabilizers on four-qubit Cs plaquettes via a single global Rydberg pulse sequence. Our results demonstrate dual-species tweezer arrays as a promising route towards scalable QEC and open the door to new quantum control protocols leveraging both interspecies and intraspecies interactions.
Cite
@article{arxiv.2605.10924,
title = {Multi-Qubit Stabilizer Readout on a Dual-Species Rydberg Array},
author = {Yu Wang and Ryan Cimmino and Kenneth Wang and Santiago Lopez and Jeffrey Li and Jin Ming Koh and Jonathan N. Hallén and Anne Matthies and Norman Y. Yao and Kang-Kuen Ni},
journal= {arXiv preprint arXiv:2605.10924},
year = {2026}
}